KNAC.COM can confirm that tonights show in Dallas @ America Airlines Center has been officially "postponed" until Thursday, April 24th.

No other news on future dates.
From TMZ.com
Sources tell TMZ the Van Halen tour has just been canceled!
We're told arrangements are being made right now to cancel hotel stays for the tour -- which was scheduled to continue through April 19th. Sources tell us the reason for the cancellation is Eddie -- that he is having "issues."
The last three shows had already been canceled. There have been reports that Eddie was out of it during concerts -- and video of recent performances in which his guitar playing was atrocious.
Reps could not be reached for comment.